BMW M5 Forum and M6 Forums banner

1 - 20 of 25 Posts

·
Registered
Joined
·
804 Posts
Discussion Starter #1
I am really suffering from the mod bug right now and am working on a few upgrades. On Tuesday I am having the resonator and secondary cat removed to compliment my Eisenmann race. I also just paid for my Evolve Alpha-N tune :)
I'm considering upgrading my brakes some, despite never having tracked my car. I hope to do so when I return form the Middle East, although it would be very seldom. For someone who doesn't really track their car, but might do so every few blue moons, is there an opinion on replacing the front brakes with some Stoptech's and leaving the rears stock, although with new blue carbon pads?

Would this increase stopping power enough to warrant doing or is there an actual need for front and rears to be replaced simultaneously?

Thank you,
~Pat
 

·
Registered
Joined
·
2,154 Posts
I'm running Cool Carbon up front and the factory pads in the rear. I will upgrade the rears on my next service in about 2 weeks. I love the Cool Carbon as the bite is better, they aren't too noisy, and the brake dust is reduced by about 80%.

I hope this helps. Good luck and please keep us posted.

cheers-mk

I am really suffering from the mod bug right now and am working on a few upgrades. On Tuesday I am having the resonator and secondary cat removed to compliment my Eisenmann race. I also just paid for my Evolve Alpha-N tune :)
I'm considering upgrading my brakes some, despite never having tracked my car. I hope to do so when I return form the Middle East, although it would be very seldom. For someone who doesn't really track their car, but might do so every few blue moons, is there an opinion on replacing the front brakes with some Stoptech's and leaving the rears stock, although with new blue carbon pads?

Would this increase stopping power enough to warrant doing or is there an actual need for front and rears to be replaced simultaneously?

Thank you,
~Pat
 

·
Registered
Joined
·
804 Posts
Discussion Starter #3
I'm running Cool Carbon up front and the factory pads in the rear. I will upgrade the rears on my next service in about 2 weeks. I love the Cool Carbon as the bite is better, they aren't too noisy, and the brake dust is reduced by about 80%.

I hope this helps. Good luck and please keep us posted.

cheers-mk
I almost bought some of these a little while ago, but I wasn't anywhere near due for a pad replacement yet. Did you go with the Bobcat 1521?
 

·
Registered
Joined
·
2,154 Posts
Not sure what that designation means. I'm out and about now but I will take a look at the box and paperwork when I return home.
 

·
Registered
Joined
·
804 Posts
Discussion Starter #5
Thank you. It's just the name if the brakes in quite a few of the posts I've read.
 

·
Registered
Joined
·
2,154 Posts
OK.
Mine are the Street/Track formulation. I hope this helps!
Cheers-mk
 

·
Registered
Joined
·
804 Posts
Discussion Starter #7
Thank you. I'll take a look.
~Pat
 

·
Registered
Joined
·
2,154 Posts

·
Registered
Joined
·
3,940 Posts
I went with the Carbotech Bobcat 1521 pads. They are freaking awesome! They sh!t on my Hawk HPS pads on my daily driver lol.
 

·
Registered
Joined
·
2,046 Posts
So, if I understand correctly, you want to put a StopTech BBK on the front with new pads and just put new pads on stock rear rotors?

I am not really sure you should do that, as I believe the StopTech front rotors will be larger in size than your stock rear rotors, which may lead to a misbalance in braking?

Don't take my word for it though, I am nowhere near a specialist or engineer!

I just have stock rotors and Carbotech Bobcats 1521 like SuckaGDog, plenty of stopping power. Dust doesn't bother me since my wheels are powder coated matte black.
 

·
Registered
Joined
·
804 Posts
Discussion Starter #11
So, if I understand correctly, you want to put a StopTech BBK on the front with new pads and just put new pads on stock rear rotors?

I am not really sure you should do that, as I believe the StopTech front rotors will be larger in size than your stock rear rotors, which may lead to a misbalance in braking?

Don't take my word for it though, I am nowhere near a specialist or engineer!

I just have stock rotors and Carbotech Bobcats 1521 like SuckaGDog, plenty of stopping power. Dust doesn't bother me since my wheels are powder coated matte black.
That is essentially the gist of it, yes.
With all the positive reviews for the Bobcats, I may just go the simpler, cheaper route since i'm not really racing her anyway.
~Pat
 

·
Registered
Joined
·
2,046 Posts
That is essentially the gist of it, yes.
With all the positive reviews for the Bobcats, I may just go the simpler, cheaper route since i'm not really racing her anyway.
~Pat
Honestly, Bobcats are enough my friend, especially if you don't plan on tracking your car! I have done multiple highway runs, often 3-4 in a row up to around 1** mp/h and the stoping power of stock rotors with these pads was more than enough!
 

·
Registered
Joined
·
804 Posts
Discussion Starter #13
Honestly, Bobcats are enough my friend, especially if you don't plan on tracking your car! I have done multiple highway runs, often 3-4 in a row up to around 1** mp/h and the stoping power of stock rotors with these pads was more than enough!
Sounds quite promising then :)
 

·
In Memoriam
Joined
·
2,400 Posts
The whole shooting match.

The HUGE problem with M5/M6 brakes is not the rotors, neither the pads.

It is the calipers. Badly designed and totally inadequate FOR TRUE SPIRITED driving.
Good for one or two good stops from 110-120 mph and then ... adios !!!

Indeed some good quality break pads can lessen the problem, but not really.

Here is the true deal :

1) If you do not intend to track the car, use some better pads, better fluid and Aeroquip brake lines.
2) If you intend to track the car or go for some EXTENDED spirited driving, the above solutions are very far from sufficient.

a) Stoptech BBK front and rear, with the brake lines they provide and Motul BF660.
b) Brembo BBK ( 6 pot, 380x32 slotted front and 4 pot 380x28 rear slotted )
c) Brembo BBK ( 6 pot 405x 34 slotted front and 4 pot 380x28 rear slotted ).

The above are brakes. No fade, tractable and very high endurance.

Please note the word slotted.

Drilled brakes are beautiful to the eye and predispose you for a racy feeling.
Wrong !!!
Drilled brakes easily warp, especially when they are cheap OEM staff, and also produce small tiny brakes around the holes which soon get bigger and bigger.

Slotted brake rotors are the professional staff, two piece, with aluminium center bells.

I have solution ( c ) on my M6. If only I could give you my car to drive and break.


That is it.


George
 

·
Registered
Joined
·
804 Posts
Discussion Starter #15
George,
Thank you for the input. I know many have replaced the brake lines - is that really worth doing for a non-track car? I know many others in many different cars have upgraded them, but it's not a route I have taken before. Granted, they were more drag cars than track cars.
I have a good 6 months (deployment to the middle east) to mull this all over and figure out what I'll be doing before I need to upgrade any brakes, but it's always nice to have the information.
Thank you,
~Pat
 

·
In Memoriam
Joined
·
2,400 Posts
George,
Thank you for the input. I know many have replaced the brake lines - is that really worth doing for a non-track car? I know many others in many different cars have upgraded them, but it's not a route I have taken before. Granted, they were more drag cars than track cars.
I have a good 6 months (deployment to the middle east) to mull this all over and figure out what I'll be doing before I need to upgrade any brakes, but it's always nice to have the information.
Thank you,
~Pat

It is. Pedal feel night and day. Combine this with high quality brake fluid ( Motul BF660 or ATE Super Blue ) and a set of good quality
pads ( as other members have suggested ), and you have a very good brake upgrade for everyday use.


George:cheers:
 

·
Registered
Joined
·
5,850 Posts
It is. Pedal feel night and day. Combine this with high quality brake fluid ( Motul BF660 or ATE Super Blue ) and a set of good quality
pads ( as other members have suggested ), and you have a very good brake upgrade for everyday use.


George:cheers:
2x on slotted v. drilled. I'm trying to kill my drilled rotors (came with my StopTech BBK group buy) for slotted. I'm running slotted on my other cars and the drilled rotors on my e60 kind of bug me. Go in the pits of any professional race, and you will be hard pressed to see drilled rotors on any of the race cars.

OP ~ I've run Motul RBF 600 on stock brakes at the track and they never boiled over, but I was driving knowing I was on stock brakes with good pads and RBF 600. In other words, I drove at 7/10s and managed my brakes. For street, SS brake lines and good pads, with good brake fluid, you should have zero issues.
 

·
Registered
Joined
·
804 Posts
Discussion Starter #18
2x on slotted v. drilled. I'm trying to kill my drilled rotors (came with my StopTech BBK group buy) for slotted. I'm running slotted on my other cars and the drilled rotors on my e60 kind of bug me. Go in the pits of any professional race, and you will be hard pressed to see drilled rotors on any of the race cars.

OP ~ I've run Motul RBF 600 on stock brakes at the track and they never boiled over, but I was driving knowing I was on stock brakes with good pads and RBF 600. In other words, I drove at 7/10s and managed my brakes. For street, SS brake lines and good pads, with good brake fluid, you should have zero issues.
Thanks for the info. I think when I get back I will simply go with the upgraded lines, Super blue because I've used it before and liked it, and some good pads. If I need to upgrade the discs then we'll see at a later date.
 

·
Registered
Joined
·
3,940 Posts
Thanks for the info. I think when I get back I will simply go with the upgraded lines, Super blue because I've used it before and liked it, and some good pads. If I need to upgrade the discs then we'll see at a later date.
George is right, the lines make a huge difference! I picked up a set of Stoptech stainless steel lines from Turner a couple years ago when they were on sale. You notice it the most under heavy/constant application of the brakes.

I would be all over Stoptech's BBK if I had the cash right now. I'm sending my wheels back to HRE for a refinish in Brushed Tinted Clear than I'll be offically done with my car, that is until I save up enough money to buy the front & rear set hehe. Damn college expenses!

By the way, they don't distribute the "super blue" brake fluid anymore in the U.S. ATE still makes their gold version, now called the "super gold". Stupid government regulations finally realized the fluid was actually blue after so many years on being the shelf they declared any brake fluid should not be any other color besides amber/clear or whatever. I'm sure the "super blue" will come back but for "off-road" use only.
 

·
Registered
Joined
·
804 Posts
Discussion Starter #20
I thought I would update this. I ended up buying BBK 380x35 Slotted rotors for the front and upgraded pads for the rear. I couldn't justify getting BBK's all the way around just yet, but maybe another day. I am quite happy with how she brakes although I may still get some brake lines for the rear as the front were upgraded with the BBK's.
Thanks for the advice gents.

~Pat
 
1 - 20 of 25 Posts
Top